Scrap baling press with bottom discharge



2 Sheets-Sheet l \NINVENTOR. Q f 14 964. HIcHELE/J m, Mamba Arramvcfl K.AICHELEN SCRAP BALING PRESS WITH BOTTOM DISCHARGE Filed July 28, 1955Nov. 22, 1960 Nov. 22, 1960 K. AICHELEN SCRAP BALING PRESS WITH BOTTOMDISCHARGE Filed July 28, 1955 2 Sheets-Sheet 2 m m m W 16924 Hal/ 54.19%

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ATTQENEY! 2,960,927 Patented Nov. 22, 1960 ice SCRAP BALING PRESS WITHBOTTOM DISCHARGE Karl Aichelen, Milwaukee, Wis., assignor to LogemannBrothers Company, Milwaukee, Win, a corporation of Wisconsin Filed July28, 1955, Ser. No. 524,857

3 Claims. (Cl. 100232) This invention relates to a scrap baling presswith bottom discharge.

The present press bales scrap with rams acting in three directions butrequires minimum excavation for its installation. The first compressiondesirably takes place 1ongitudinally of the press box. In someinstallations, the second compression takes place vertically but in adownward rather than in an upward direction to force the baled scrapagainst an anvil in the bottom of the press box. In these installations,the third compression takes place horizontally in a lateral directionand the finished bale is then ejected by gravity by simply withdrawingthe supporting anvil portion of the bottom of the box. Upon its returnmovement, the anvil may move the finished bale on to a dischargeconveyor.

In other installations, the second ram moves horizontally and the thirdvertically downwardly. The sequence is, therefore, broadly immaterial.The description will be limited to the preferred embodiment with thisunderstanding.

Those skilled in the art will recognize the fact that the describedprocedure and structure eliminates a dwell in the operation of the thirdram cylinder which has heretofore been used quite extensively forejection purposes after the bale has been completed.

In the drawings:

Fig. 1 is a view fragmentarily illustrating partially in section andpartially in side elevation a baling press embodying the presentinvention.

Fig. 2 is an end elevational view of the press, the floor and walls ofthe installation pit and foundation pit being shown in section on theline 22 of Fig. 1.

Fig. 3 is a view taken in section on line 33 of Fig. 1.

Fig. 4 is a fragmentary detail view similar to Fig. l but showing thedischarge of the bale.

The press box 5 is spanned near its compression end by a bridge member 6with a lower surface beveled at 7 to receive the correspondingly beveledend 8 of the slidable cover 9. The cover is closed by a ram whichincludes a cylinder 10 and piston 11, the latter being directly engagedwith an ear 12 projecting upwardly from the cover.

A heavy wall 13 closes the press box at its compres sion end. Slidablelongitudinally of the box to and from the wall 13 is the head 14 of thefirst or low pressure ram that acts upon the scrap placed in the box.The cylinder of this ram is illustrated at 15 and the piston at 16. Innormal operation, this ram will approach the end wall 13 sufficientlyclosely to be substantially flush with the far side of the bridge member6.

Thereupon the second or intermediate ram will go into action. This ramoperates downwardly. Its normally retracted head 17 is flush with thebottom of the bridge member 6 in its retracted position. Its actuatingpiston 13 and cylinder 19 are best shown in Fig. 2. The scrap, alreadycompressed in the compression end of box 5, is pressed a ainst anvil 26with such force as to be reduced to less than half its height by theoperation of the intermediate ram.

Upon conclusion of the operation of the intermediate ram, the highpressure ram operates. This ram has a head 20 normally retracted flushwith the side of the box 5 as best shown in Fig. 3. From the retractedposition there illustrated, the head 20 is advanced to the right by themovement of ram piston 21 outwardly from ram cylinder 22. The heads 14and 17 of the low pressure and intermediate rams remaining in position,the advance of the high pressure ram head 20 reduces the bale to littlemore than half of its original length transversely of the press box.

Dimensions are given solely for purposes of illustration, and not by wayof limitation. In commercial embodiments, the press box is inches long,60 inches wide and 48 inches deep. The low pressure ram head 14approaches to within about 16 inches of the end wall 13 of the pressbox. The intermediate ram head 17 approaches to within about 20 inchesof the anvil in the bottom of the press box. The high pressure ram at 20approaches to within 36 inches of the far side of the press box. Thusthe approximate dimension of the compressed bale of scrap is 16 inchesby 36 inches by 20 inches.

The permanently installed bottom portion 24 of the press box terminatesat a transverse member 25, beyond which, in the compression end of thepress box, the bale is supported on a retractable anvil 26. The anvil isillustrated in full lines in Fig. 1 in the position which it occupiesduring the forming of the bale. The anvil has supporting flanges 27which ride on ways provided at 28 by the downwardly extended side plates29 which support an intermediate ram cylinder 19 and the guide pins 30for the intermediate ram head 17.

From the normal position of the anvil 26 as shown in Fig. 1, the anvilmay be moved to the position in which it is shown in Fig. 4 by means ofa ram which includes a cylinder 32 and piston 33 and yoke comprisinglaterally spaced legs 34 shown in dotted lines in Fig. 3. An apron 35depends from the front of anvil 26.

With the anvil in the retracted position indicated in Fig. 4, the baleformed in the press box as above described is allowed to drop by gravityfrom the press box between the yoke legs 34 onto a receiving plate 37which overhangs a discharge conveyor 38 operating laterally beneath thepress. With the bale on the plate in the position indicated at 39, theretraction of piston 33 in the cylinder 32 not only closes the bottom ofthe press box in readiness for another compressing operation, butdischarges the bale onto the conveyor 38 which conveys it to anysuitable delivery point. In dotted lines in Fig. 4, the bale is shown insuccessive positions en route to the conveyor.

It will be observed that no dwells or delays are required in theoperation of the device. Just as soon as the bale is completed withinthe press box, all of the several rams are retracted to their startingpoints. The anvil simply moves forth and back to discharge the bale andwhile the conveyor carries the finished bale away, the box is beingreloaded for another forming operation.

Only the fundamentals of the present invention have been described. Itis immaterial to the present invention how the operation of the severalsrams is controlled and whether the controls are manual or hydraulic orelectrical or fully automatic. The rams are, in accordance with theconventional practice, hydraulically powered through the pumps 40, 41driven by motors 42. It is known in the art that the valves whichconnect the respective cylinders to, or relieve them of, the hydraulicpressure may be directly operated manually or may be controlled remotelyby push buttons and solenoids. in the instant device, it is preferredthat the control be fully automatic so that, the operation beinginitiated by the closing of the press box cover, each successiveoperation follows in series without further attention of the operator.This is easily done by the installation of pressure switches so that, asthe pressure in a ram rises at the completion of each movement, apressure switch is closed to initiate the next operation. The cover andanvil may be controlled by a single valve to close their respectivepress box openings concurrently and to open them concurrently.

I claim:

1. In a scrap baling press, the combination of a press box provided witha low pressure ram operable longitudinally thereof, an intermediate ramoperable downwardly, and a high pressure ram operable laterally for theconsolidation of scrap, *saidbox having acompression end provided with afixed bottom wall portion and with a retractable bottom wall portion inthe path of the intermediate ramand constituting an anvil against whichthe scrap is compacted in the downward movement of said intermediateram, means supporting the anvil for retracting and advancing movementtransversely to the path of said intermediate ram, and means separatefrom said rams for actuating said anvil between advanced and retractedpositions, whereby a bale of scrap compressed in said box is dischargedby gravity upon the movement of said anxil to its retracted position.

2. The device of claim 1 in which the means supporting the anvil formovement between advanced and retracted position comprises generallyhorizontal ways generally parallel to the path of movement of the lowpressureram and along which said anvil is slidable from beneath a baleof scrap compressed in the compression end of said box, in furthercombination with a support for a bale of compressed scrap discharged bygravity from said box upon movement of said anvil to its retractedposition, said anvil comprising means engageable in the 3- course of theadvancing movement of said anvil with a bale of compressed scrap on saidsupport to displace such bale toward a point of discharge.

3. In a scrap baling press, the combination with a press box and a lowpressure ram operable longitudinally thereof, said press box having abottom underlying the path of movement of said low pressure ram andhaving a high pressure end provided with a retractable anvilconstituting at least a portion of its bottom and extendingsubstantially throughout the width of said box and toward which end saidlow pressure ram operates, an intermediate ram positioned above the boxand arranged to operate downwardly toward said anvil for compactingscrap thereagainst, and a high pressure ram disposed laterally of thebox and arranged to operate laterally to complete a bale over the anvil,and means separate from said rams for retracting the anvil from beneaththe bale thus corripleted, whereby the bale is discharged by gravityfrom, the bottom, a bale-ejecting conveyor mounted for operation beneaththe box and offset from the point of bale discharge, the anvil havingmeans for pushing onto said conveyor, in the return movement of theanvil, a bale discharged by gravity from the box.

